查询词典 titanium

The results indicate that the effect of alloying elements V and Cr on mechanical properties at room-temperature, creep behavior and microstructures are similar. With increasing contents of V and Cr, their mechanical properties produce little change, the creep resistant property decreases and microstructure grows, which is mainly due to their characteristics of β-stability element and smaller atomic radius compared with Ti. On the contrary, the effects of V and Cr on the thermal stability are quite different. With increasing V content or decreasing Cr content the thermal stability for the alloy becomes better, which may be due to the different solution characteristics of V and Cr element in titanium alloy that V belongs to isomorphous β-stability element and Cr belongs to eutectoid β-stability element.

结果表明：合金元素V和Cr对Ti40合金室温力学性能、蠕变行为和组织的影响具有相似性，即随V和Cr含量的降低，合金室温综合力学性能变化不明显、抗蠕变能力减弱、组织粗化：这与V和Cr同属于β稳定元素、且原子半径都小于Ti原子有关；而V和Cr对于热稳定性能的影响则完全相反，V含量的增加或Cr含量的降低含金热稳定性能优化，其主要原因可能与V属于同品型β稳定元素而Cr属于共析型β稳定元素有关。

Methods 51 cases of CSM were treated with anterior decompression,iliac crest autograft and locking titanium plate.

目的评价脊髓型颈椎病前路减压后应用带锁钛板内固定的价值。

Have a size and precision automatic lathe, all kinds of Equipment matching complete, Machinable material has Stainless Steel, Titanium, Copper, copper, aluminum and iron.

拥有大小精密自动车床、各种设备配套齐全，可加工的材料有不锈钢，钛，磷铜，铜，铝，铁。

When treated withlow-valent titanium, a five-member ring 3H,4H-cycl[3,2,2]azine wasobtained.

发现〓可以促进羰基与双键偶联生成了不常见的六元环，制得了4H，5H，5H-3-Hydroxy-cycl[3，3，2]azine。

Starting from 3-benzoyl-5-formyl-indolizine, 3-benzoyl-5-(2'2'-diacetylethenyl)-indolizines and analogs were obtained by the 〓mediated aldol condensation or Wittig reaction. These compounds,promoted by low-valent titanium, gave highly functionlizedcycl[3,2,2]azine derivatives. The coupling reaction proceeded betweenthe carbonyl group and the carbon-carbon double bond, a rare example inMcMurry reaction.

我们以3-苯甲酰基-5-甲酰基中氮茚为原料，通过三碘化钐促进的aldol反应和Wittig反应制备了3-羰基-5-羰基乙烯基中氮茚，随后经低价钛还原偶联，没有生成正常的分子内羰基-羰基偶联产物，而是得到反常的羰基与α，β-不饱羰基的双键偶联产物，较高收率地得到了含多官能团的CycI[3，2，2]azine衍生物。

A lustrous gray strong metallic element resembling titanium; it is used in nuclear reactors as a neutron absorber; it occurs in baddeleyite but is obtained chiefly from ''.

一种有光泽、灰白色、坚固的金属元素，类似钛，在核反应堆中用作中子吸收剂，见于斜锆石中。

A lustrous gray strong metallic element resembling titanium; it is used in nuclear reactors as a neutron absorber; it occurs in baddeleyite but is obtained chiefly from zircon .

一种有光泽、灰白色、坚固的金属元素，类似钛，在核反应堆中用作中子吸收剂，见于斜锆石中。

Considering how much the first Apple Titanium's cost, this thing is practically a basement bargain.

考虑到有多少第一苹果钛的成本，这件事实际上是地下室讨价还价。

The barium titanate power with size 60~90 nm was prepared at 200~280℃×4h, using barium hydroxide and titanium tetrarchloride as the resources of Ba and Ti, ammonia as mineralization reagent.

采用氢氧化钡和四氯化钛作为钡源和钛源，氨水作矿化剂，在200~280℃保温4h条件T合成粒径为60~90nm钛酸钡粉体。

Stainless steel 35-42 °Be FeCl 3 35-55 Mild steel 35-42 °Be FeCl 3 35-55 Beryllium copper 30-42 °Be FeCl 3 or 40-55 ammoniacal copper or 33 °Be acidic CuCl 2 Copper and copper 30-42 °Be FeCl 3 or 40-55 alloys ammoniacal copper or 33 °Be acidic CuCl 2 Inconel and other 38-42 °Be FeCl 3 or 45-55 high nickel alloys conc nitric/conc hydrochloric acid/water 1:1:3 Aluminium 20% NaOH 60-90 or conc hydrochloric 20-65 acid/water 1:4 55 or alkaline potassium ferricyanide Brass 30-42 °Be FeCl 3 or 40-55 ammoniacal copper or 33 °Be acidic CuCl 2 Molybdenum Alkaline potassium 55 ferricyanide 40-55 or 40 °Be Fe(NO 3 ) 3 Titanium 10-50% HF 30-50 (optionally with HNO 3 )*The concentration of etchant (column 2) is measured in Degrees Baume where:°Be = 145 (SG - 1/SG); and SG is the specific gravity of the solution.

表美- 00002表2金属共同腐蚀剂*温度° C的不锈钢35-42 °成为氯化铁三 35-55低碳钢35-42 °成为氯化铁三 35-55铍铜30-42 °成为氯化铁3或40-55氨铜或33 °是酸性CuCl的2铜及铜30-42 °成为氯化铁三或40-55合金氨铜或33 °是酸性CuCl的2镍铬铁合金和其他38-42 °成为三氯化铁3或45-55高镍合金浓硝酸/浓盐酸/水1时01分03秒铝20％的NaOH浓盐酸60-90或20-65酸/水1：4 55或氰化钾铜30-42 °碱性钾成为三氯化铁3或40-55氨铜或33 °是酸性CuCl的二钾55钼碱性铁氰化钾40-55或40 °成为铁Fe（NO 3）3钛10-50％的HF 30-50*的浓度对侵蚀剂（栏2）测量波美度其中：°成为= 145（法兴- 1/SG）；和SG是比重。

The method was successfully applied to analyze the stability of four batches of chloramphenicol ophthalmic solutions stored at room temperature.

该方法成功地用于四组在室温下储存的氯霉素眼药水的稳定性分析。

The largest animals ever to fly were pterosaurs.

曾经最大的飞行动物是翼龙。